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This article mainly explains the "Python how to achieve batch conversion of video and audio sampling rate", the content of the article is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "Python how to achieve batch conversion of video and audio sampling rate" bar!

Environmental dependence

Ffmpeg environment installation

Ffmpy installation:

Pip install ffmpy-I https://pypi.douban.com/simple code

No nonsense, go to the code.

#! / user/bin/env python# coding=utf-8 "" @ project: csdn@author: swordsman A Liang _ ALiang@file: transfor_mp4_audio_sampling_rate.py@ide: PyCharm@time: 2021-11-24 13:48:08 "from ffmpy import FFmpegimport os def transfor (video_path: str, tmp_dir: str Result_dir: str): file_name = os.path.basename (video_path) base_name = file_name.split ('.) [0] file_ext = file_name.split ('.) [- 1] ext = 'wav' audio_path = os.path.join (tmp_dir,' {}. {} '.format (base_name, ext)) print (' File name: {} Extract audio '.format (audio_path) ff = FFmpeg (inputs= {video_path: None}) Outputs= {audio_path:'- f {}-vn-ac 1-ar 16000-y'.format ('wav')}) print (ff.cmd) ff.run () if os.path.exists (audio_path) is False: return None video_tmp_path = os.path.join (tmp_dir,' {} _ 1. {} '.format (base_name File_ext)) ff_video = FFmpeg (inputs= {video_path: None}, outputs= {video_tmp_path:'- an'}) print (ff_video.cmd) ff_video.run () result_video_path = os.path.join (result_dir, file_name) ff_fuse = FFmpeg (inputs= {video_tmp_path: None, audio_path: None} Outputs= {result_video_path:'- map 0 map v-map 1Parade a-c video_dir v copy-C V aac-shortest'}) print (ff_fuse.cmd) ff_fuse.run () return result_video_path def handle (video_dir: str, tmp_dir: str Result_dir: str): if os.path.isdir (video_dir): for file in os.listdir (video_dir): try: result = transfor (os.path.join (video_dir, file), tmp_dir Result_dir) except Exception as e: print (e) continue if result: print (result) if _ _ name__ ='_ _ main__': handle ('CGV _ main__': handle') 'Corexpact UsersUnixUsersAccording to Desktopripple result')

Code description

1. The input parameters of handle method are: video directory, temporary directory, and final result video directory.

2. The handle method traverses the video directory and performs transfor processing on the video at one time. The steps are: (1) extract the video audio and convert it into defined sampling rate audio; (2) extract the video without audio in the video; (3) fuse the new video and the new audio to synthesize the final video to the specified result directory.

3. No audio exception is discarded directly, and no conversion is required.

4. The file name of the final result directory is the same as that of the original video directory.

5. The code is mainly converted to 16k sampling rate, which can be adjusted according to the demand.

Verify it.

Original video sampling rate

Results Video sampling rate

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